Modular building unit



FIG. 1 is a perspective view of a modular building unit showing the new design;

FIG. 2 is a front view thereof;

FIG. 3 is a back view thereof;

FIG. 4 is a left side view thereof;

FIG. 5 is a right side view thereof;

FIG. 6 is a top plan view thereof;

FIG. 7 is a bottom plan view thereof; and,

FIG. 8 is a top perspective view thereof.

The broken lines in the Figures are included for the purpose of illustrating environment and form no part of the claimed design. 

CLAIM The ornamental design for a modular building unit, as shown and described. 